672470475445 has 4 divisors (see below), whose sum is σ = 806964570540. Its totient is φ = 537976380352.

The previous prime is 672470475377. The next prime is 672470475553. The reversal of 672470475445 is 544574074276.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 168610426884 + 503860048561 = 410622^2 + 709831^2 .

It is a cyclic number.

It is not a de Polignac number, because 672470475445 - 2⁹ = 672470474933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67247047540 + ... + 67247047549.

It is an arithmetic number, because the mean of its divisors is an integer number (201741142635).

Almost surely, 2^672470475445 is an apocalyptic number.

It is an amenable number.

672470475445 is a deficient number, since it is larger than the sum of its proper divisors (134494095095).

672470475445 is a wasteful number, since it uses less digits than its factorization.

672470475445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134494095094.

The product of its (nonzero) digits is 26342400, while the sum is 55.

The spelling of 672470475445 in words is "six hundred seventy-two billion, four hundred seventy million, four hundred seventy-five thousand, four hundred forty-five".